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Author - title
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Year
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| details | Aptian | Albian | USSR(WSL) | Ivanova,E.A. et al. Pollen and spores of Western Siberia; Jurassic to Paleocene. | 1961 |
| details | Aptian | USSR(Ukrainian SSR) | Voronova,M.A. Stratigraphic subdivision of Lower Cretaceous sediments of the Dnieper-Donets Basin, based on palynology. | 1971 |